I'm planning to build a smart socket like device for which i need to power up my microcontroller from the ac source, so please help me with an ac to dc converter that fits into this small space(Input :220-250V & Output:12V or 5V).
I need something that fits in that space, with an output current of 500mA and Voltage of 5V or 12Vyou are not telling us anything and asking everything in return. For what we know you don't even know about electronics at all.
What do you seek? High current? Low Noise? High voltage stability? Efficiency?
Either way search for buck converters.
Transformer can make the circuit bulkyHere is an excellent answer to your question:
https://images.search.yahoo.com/sea...-?p=5V+power+supply+schematic&fr=&fr2=piv-web
ak
Fits in what space?I need something that fits in that space, with an output current of 500mA and Voltage of 5V or 12V
But i dont see any transformers in today's mobile phone chargersIf it doesn't have a transformer it cannot be discussed here, according to the User Agreement for this forum. Transformerless power supplies are just too unsafe, especially for those who want to build them. Have you ever wondered why you don't see transformerless line powered phone chargers?
The transformers ARE there. But they are much smaller because they handle much higher frequencies - more than a few Kilohertz.But i dont see any transformers in today's mobile phone chargers
Iam from India and is there any way i can buy such a type of small transformer( with input: 230V and output:12V)If you carefully gut wall warts you can get fairly small switch mode power supplies. The attached one is 5V/700mA. Most are regulated, but some are not. You have to find a way to insulate the PCB from it's new enclosure, as you are still dealing with 120VAC in the input side. I do this frequently.
Ken
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1.5x1.5x1.5cm(approx.)How small is "small"?
You still have given us no specifics.
Can u specify the smallest dimensions possible230VAC to12VDC/500mA in 1.5x1.5x1.5cm(approx.)...not going to happen.
Ken
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